Path: utzoo!attcan!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.arch
Subject: Re: Single user vs. shared
Keywords: sun NFS bogosity write-thru swap tmp
Message-ID: <3138@auspex.auspex.com>
Date: 7 Apr 90 19:42:59 GMT
References: <1712@aber-cs.UUCP>
Organization: Auspex Systems, Santa Clara
Lines: 10

>Also, NFS on the server uses the normal caching mechanism; unfortunately
>swap blocks received from clients should not be cached, because they have
>been paged out by the client's kernel because it believes that they are
>not going to be needed again soon.

Exactly, which is why files used for NFS swapping in SunOS 4.x have the
"sticky bit" set; said bit in SunOS 4.x causes data blocks *not* to be
cached on the server....  (Said bit does not, BTW, cause any copy of
text pages to be saved on the swap area, since SunOS 4.x pages shared
stuff like text directly from the file.)